video image shake of Intel Graphics

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https://bbs.archlinux.org – hi,my laptop's graphics is Intel integrated HD graphics. i use the driver "xf86-video-intel"when I play video with VLC, the image shakes.my friend tell me to add "CLUTTER_PAINT=disable-clipped-redraws:disable-culling" in /etc/environment.it seems better after doing such change but the image still shakes.does anybody encounter this problem? how to deal with this issue?hardware info:i7-3520M, Intel HD Graphicssoftware info:kernel: 3.5.6-1-ARCHvlc: 2.0.3 wangsiyuan https://bbs.archlinux.org/profile.php?id=50844 2012-10-17T14:05:01Z (HowTos)